_=geom:Geometry:4326,name:String
line.1=LINESTRING(-1  1, -1 -1)|line1
line.2=LINESTRING(-1 -1,  1 -1)|line2
line.3=LINESTRING( 1 -1,  1  1)|line3
line.4=LINESTRING( 1  1, -1  1)|line4